Fill the gap between EVA-3 (Jan 15 handover) and EVA-6 (Feb 6).
EVA-4: Physical removal of Binglun #1 ISRU equipment after software
shutdown in EVA-2. Binglun #1 converted to standard cargo configuration.
EVA-5: Fuel transfer line verification between Binglun #1/#2 plus full
base system inspection following GHC-05 crew departure.
Co-Authored-By: Claude <noreply@anthropic.com>